The last poll about philosophers for awhile--I promise!

But a reader alerted me to a site that allows one to construct Condorcet polls, which are much more informative than the first-past-the-post polls we ran last week. So here is it is: Who is the most important philosopher of the past 200 years? 53 choices, and you can rank them (or express "no opinion"). 53 is the default rank, you must choose 'no opinion' if you don't want to penalize a philosopher's ranking. Have fun!